2021: Maiden Challenger title

He won his first career ATP Challenger Tour singles title in December 2021 in Rio de Janeiro, Brazil where he defeated Nicolás Álvarez Varona of Spain.

2022: ATP debut and first win

He made his ATP debut at the 2022 Los Cabos Open as a qualifier.

Having received a wildcard, he recorded his first ATP main-draw match win at the Korea Open defeating wildcard Hong Seong-chan.^[1][2]

2023: Top 150 debut

He reached the top 150 on 24 April 2023.

Davis Cup

In March 2021, Uchida made his debut in the Davis Cup where he represented team Japan on grass courts against team Pakistan. He won the only match that he played, in singles, against Aisam Qureshi in straight sets 6–4, 7–6^(7–4). He was meant to play an additional singles match but it became a dead rubber as the match's result wouldn't have changed the outcome of the tie.

Singles: 16 (10–6)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Aug 2014	Korea F12, Ansung	Futures	Clay	Hong Chung	6–4, 7–5
Win	2–0	Jun 2015	USA F17, Buffalo	Futures	Clay	Maximiliano Estévez	6–4, 6–1
Loss	2–1	May 2016	Sweden F1, Karlskrona	Futures	Clay	Carl Söderlund	1–6, 2–6
Loss	2–2	May 2016	Sweden F2, Båstad	Futures	Clay	Julien Cagnina	4–6, 6–3, 2–6
Win	3–2	Jun 2016	USA F20, Rochester	Futures	Clay	Juan Manuel Benitez Chavarriaga	6–4, 6–4
Loss	3–3	Jul 2016	USA F22, Pittsburgh	Futures	Clay	José Statham	3–6, 6–2, 2–6
Loss	3–4	May 2017	USA F16, Tampa	Futures	Clay	Facundo Mena	4–6, 7–6(7–4), 0–6
Win	4–4	Jul 2017	USA F22, Pittsburgh	Futures	Clay	Nathan Pasha	3–6, 7–6(7–5), 6–4
Win	5–4	Sep 2017	Canada F7, Toronto	Futures	Hard	Dennis Nevolo	7–6(8–6), 3–6, 6–1
Loss	5–5	Dec 2017	USA F40, Tallahassee	Futures	Hard	Ryan Shane	6–7(3–7), 1–6
Loss	5–6	Dec 2020	M15 Monastir, Tunisia	World Tennis Tour	Hard	Skander Mansouri	4–6, 6–7(3–7)
Win	6–6	Jan 2021	M15 Monastir, Tunisia	World Tennis Tour	Hard	Alexander Erler	6–4, 6–2
Win	7–6	Mar 2021	M25 Vale do Lobo, Portugal	World Tennis Tour	Hard	Sebastian Fanselow	5–7, 7–6(7–3), 7–6(7–5)
Win	8–6	Oct 2021	M25 Loulé, Portugal	World Tennis Tour	Hard	Lucas Gerch	6–4, 6-4
Win	9–6	Dec 2021	Rio de Janeiro, Brazil	Challenger	Hard	Nicolás Álvarez Varona	3–6, 6–3, 7–6(7–3)
Win	10–6	Jun 2022	Oeiras, Portugal	Challenger	Clay	Kimmer Coppejans	6–2, 6–4

Doubles: 21 (12–9)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Sep 2013	Mexico F15, Quintana Roo	Futures	Hard	César Ramírez	Alex Llompart Finn Tearney	7–6(7–5), 6–4
Loss	1–1	Jul 2014	Korea F8, Gimcheon	Futures	Hard	Yusuke Watanuki	Kim Yu-Seob Lim Hyung-Chan	4–6, 2–6
Win	2–1	Aug 2014	Korea F10, Chuncheon	Futures	Hard	Yusuke Watanuki	Kim Jae Hwan Lee Jea Moon	6–3, 6–2
Win	3–1	Oct 2014	Turkey F35, Antalya	Futures	Hard	Takashi Saito	Tuna Altuna Dimitar Kuzmanov	7–5, 6–3
Loss	3–2	Nov 2014	Thailand F10, Bangkok	Futures	Hard	Jacob Grills	Pruchya Isaro Nuttanon Kadchapanan	2–6, 1–6
Win	4–2	Sep 2015	Canada F10, Toronto	Futures	Hard	Marko Tepavac	Nathan Pasha Raymond Sarmiento	2–6, 6–4, [10–8]
Loss	4–3	Sep 2015	Canada F11, Markham	Futures	Hard	Marko Tepavac	Nathan Pasha Raymond Sarmiento	6–7(4–7), 2–6
Win	5–3	Nov 2015	Colombia F9, Valledupar	Futures	Hard	Daniel Garza	Manuel Sánchez Federico Zeballos	7–6(7–3), 5–7, [10–8]
Loss	5–4	Dec 2015	Qatar F4, Doha	Futures	Hard	Luke Bambridge	Joris de Loore Laurens Verboven	4–6, 6–3, [7–10]
Win	6–4	Jan 2016	USA F4, Sunrise	Futures	Clay	Isak Arvidsson	Péter Nagy Denis Shapovalov	6–4, 6–4
Loss	6–5	Jan 2016	USA F5, Weston	Futures	Clay	Isak Arvidsson	Junior Alexander Ore Hunter Reese	6–7(4–7), 6–3, [8–10]
Win	7–5	Mar 2016	Canada F1, Gatineau	Futures	Hard	Stefan Kozlov	Sebastian Fanselow Adrian Sikora	7–6(7–5), 6–3
Win	8–5	Jun 2016	USA F19, Buffalo	Futures	Clay	Hans Hach	Farris Fathi Gosea Tim Kopinski	6–2, 6–3
Loss	8–6	Jun 2016	USA F20, Rochester	Futures	Clay	Damon Gooch	Hans Hach Gavin Van Peperzeel	6–7(5–7), 2–6
Win	9–6	May 2017	China F7, Wuhan	Futures	Hard	Shintaro Imai	Xin Gao Zhe Li	4–6, 6–4, [10–8]
Win	10–6	Jun 2017	China F9, Luan	Futures	Hard	Harry Bourchier	Lo Chien Hsun Sheng Hau Zhou	6–3, 7–5
Win	11–6	Sep 2017	Canada F5, Calgary	Futures	Hard	Roberto Cid Subervi	Deiton Baughman Henry Craig	3–6, 6–3, [10–8]
Loss	11-7	May 2022	Shymkent, Kazakhstan	Challenger	Clay	Sebastian Fanselow	Antoine Bellier Gabriel Décamps	6–7(3–7), 3-6
Loss	11-8	May 2022	Shymkent II, Kazakhstan	Challenger	Clay	Mikael Torpegaard	Sanjar Fayziev Markos Kalovelonis	7–6(7–3), 4–6, [4–10]
Loss	11-9	Jun 2022	Orlando, USA	Challenger	Hard	Malek Jaziri	Chung Yun-seong Michail Pervolarakis	7–6(7–5), 6–7(3–7), [14–16]
Win	12-9	Oct 2022	Seoul, South Korea	Challenger	Hard	Wu Tung-lin	Chung Yun-seong Aleksandar Kovacevic	6–7(2–7), 7–5, [11–9]